MCQOPTIONS
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MCQOPTIONS
This section includes 21 Mcqs, each offering curated multiple-choice questions to sharpen your Biochemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which is an example of electromagnetic to electrical energy conversion that occurs in living organisms? |
| A. | ATP-driven muscle contraction |
| B. | ATP-dependent photon emission in fireflies |
| C. | light-induced electron flow in chloroplasts |
| D. | ATP-driven active transport across a membrane |
| Answer» D. ATP-driven active transport across a membrane | |
| 2. |
Which is an example of chemical to mechanical energy conversion that occurs in living organisms? |
| A. | ATP-driven muscle contraction |
| B. | ATP-dependent photon emission in fireflies |
| C. | light-induced electron flow in chloroplasts |
| D. | ATP-driven active transport across a membrane |
| Answer» B. ATP-dependent photon emission in fireflies | |
| 3. |
Which is an example of chemical to electromagnetic energy conversion that occurs in living organisms? |
| A. | ATP-driven muscle contraction |
| B. | ATP-dependent photon emission in fireflies |
| C. | light-induced electron flow in chloroplasts |
| D. | ATP-driven active transport across a membrane |
| Answer» C. light-induced electron flow in chloroplasts | |
| 4. |
Which is an example of chemical to osmotic energy conversion that occurs in living organisms? |
| A. | ATP-driven muscle contraction |
| B. | ATP-dependent photon emission in fireflies |
| C. | light-induced electron flow in chloroplasts |
| D. | ATP-driven active transport across a membrane |
| Answer» E. | |
| 5. |
The phosphate groups used during glycolysis are ____________ |
| A. | Organic |
| B. | Inorganic |
| C. | Neutral |
| D. | None |
| Answer» C. Neutral | |
| 6. |
Water does a nucleophilic attack on phosphate monoester by producing ____________ |
| A. | Phosphorous chloride |
| B. | Phosphorous sulfide |
| C. | Inorganic phosphate |
| D. | Organic phosphate |
| Answer» D. Organic phosphate | |
| 7. |
Phosphoryl groups are derivatives of ____________ |
| A. | Phosphorous acid |
| B. | Phosphoric acid |
| C. | Acetic acid |
| D. | Citric acid |
| Answer» C. Acetic acid | |
| 8. |
An exergonic reaction ____________ |
| A. | Proceeds spontaneously |
| B. | Does not require activation energy |
| C. | Releases energy |
| D. | Requires energy |
| Answer» D. Requires energy | |
| 9. |
An endergonic reaction ____________ |
| A. | Proceeds spontaneously |
| B. | Does not require activation energy |
| C. | Releases energy |
| D. | Requires energy |
| Answer» E. | |
| 10. |
Anabolism and catabolism are chemically linked in the form of __________ |
| A. | ADP |
| B. | ATP |
| C. | Phosphodiester linkage |
| D. | ASP |
| Answer» C. Phosphodiester linkage | |
| 11. |
AN_EXAMPLE_FOR_CHEMICAL_TO_OSMOTIC_ENERGY_CONVERSION_THAT_OCCURS_IN_LIVING_ORGANISMS?$ |
| A. | ATP-driven muscle contraction |
| B. | ATP-dependent photon emission in fireflies |
| C. | light-induced electron flow in chloroplasts |
| D. | ATP-driven active transport across a membrane |
| Answer» E. | |
| 12. |
An example for chemical to mechanical energy conversion that occurs in living organisms$ |
| A. | ATP-driven muscle contraction |
| B. | ATP-dependent photon emission in fireflies |
| C. | light-induced electron flow in chloroplasts |
| D. | ATP-driven active transport across a membrane |
| Answer» B. ATP-dependent photon emission in fireflies | |
| 13. |
An example for chemical to electromagnetic energy conversion that occurs in living organisms |
| A. | ATP-driven muscle contraction |
| B. | ATP-dependent photon emission in fireflies |
| C. | light-induced electron flow in chloroplasts |
| D. | ATP-driven active transport across a membrane |
| Answer» C. light-induced electron flow in chloroplasts | |
| 14. |
An_example_for_electromagnetic_to_electrical_energy_conversion_that_occurs_in_living_organisms |
| A. | ATP-driven muscle contraction |
| B. | ATP-dependent photon emission in fireflies |
| C. | light-induced electron flow in chloroplasts |
| D. | ATP-driven active transport across a membrane |
| Answer» D. ATP-driven active transport across a membrane | |
| 15. |
Which of the following is false about acetyl-coA? |
| A. | It is a thioester |
| B. | It has a large, negative standard free energy of hydrolysis |
| C. | It contains phosphorous atom in the position occupied by an oxygen atom in oxygen esters |
| D. | It contains sulfur atom in the position occupied by an oxygen tom in oxygen esters |
| Answer» D. It contains sulfur atom in the position occupied by an oxygen tom in oxygen esters | |
| 16. |
The phosphate groups used during glycolysis are |
| A. | Organic |
| B. | Inorganic |
| C. | Neutral |
| D. | None |
| Answer» C. Neutral | |
| 17. |
Water does a nucleophilic attack on phosphate monoester producing |
| A. | Phosphorous chloride |
| B. | Phosphorous sulfide |
| C. | Inorganic phosphate |
| D. | Organic phosphate |
| Answer» D. Organic phosphate | |
| 18. |
Phosphoryl groups are derivatives of |
| A. | Phosphorous acid |
| B. | Phosphoric acid |
| C. | Acetic acid |
| D. | Citric acid |
| Answer» C. Acetic acid | |
| 19. |
An endergonic reaction |
| A. | Proceeds spontaneously |
| B. | Does not require activation energy |
| C. | Releases energy |
| D. | Requires energy |
| Answer» E. | |
| 20. |
Which of the following statements is false about ATP hydrolysis? |
| A. | It is highly exergonic |
| B. | Activation energy is relatively high |
| C. | ∆G<sup>‘°</sup>=-30.5kJ/mol |
| D. | ∆G<sup>‘°</sup>=30.5kJ/mol |
| Answer» E. | |
| 21. |
Anabolism and catabolism are chemically linked in the form of |
| A. | ADP |
| B. | ATP |
| C. | Phosphodiester linkage |
| D. | ASP |
| Answer» C. Phosphodiester linkage | |